CN203859486U - Switch electrical anti-tripping circuit - Google Patents
Switch electrical anti-tripping circuit Download PDFInfo
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- CN203859486U CN203859486U CN201420149878.7U CN201420149878U CN203859486U CN 203859486 U CN203859486 U CN 203859486U CN 201420149878 U CN201420149878 U CN 201420149878U CN 203859486 U CN203859486 U CN 203859486U
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- circuit breaker
- relay
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- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 42
- 230000009191 jumping Effects 0.000 claims description 34
- 230000008859 change Effects 0.000 claims description 23
- 238000004146 energy storage Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 230000002045 lasting effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a switch electrical anti-tripping circuit, which comprises a closing circuit, a close position monitoring circuit and a tripping circuit, wherein a closing change-over switch in the closing circuit is sequentially connected with a first auxiliary contact of a trip position holding relay voltage coil, a circuit breaker auxiliary normally-closed contact, a closing coil, an energy storage mechanism node and an anti-tripping relay auxiliary normally-closed contact in series, the closing change-over switch is connected to a positive electrode, and the anti-tripping relay auxiliary normally-closed contact is connected to a negative electrode; one end of a second auxiliary contact of the trip position holding relay voltage coil is connected between the closing change-over switch and the first auxiliary contact, the other end is connected with one end of the trip position holding relay voltage coil, and the other end of the trip position holding relay voltage coil is connected with the negative electrode; and one end of a trip position relay in the close position monitoring circuit is connected with the positive electrode, the other end is connected with a resistor and one end of a circuit breaker first auxiliary contact in sequence, and the other end of the circuit breaker first auxiliary contact is connected between the first auxiliary contact and a circuit breaker auxiliary normally-open contact.
Description
Technical field
The utility model is about electrical system running technology, particularly, is about a kind of switch electric trip-preventing loop.
Background technology
At present, along with the continuous application of new technology, the divide/combined floodgate that the electric switch of power plant electrical system adopts microcomputer protecting device to carry out switch more is controlled, and coordinates the anti-bouncing function of breaker body to protect electrical system.In electrical system running, in the time having a lasting switching signal, breaker closing, if there is no anti-jump loop, circuit breaker is always in "on" position, and closing circuit continues charged, can burn out closing coil or cause the device can not separating brake, cause danger.And when artificial while sending separating brake instruction, because switching signal exists always, circuit breaker can first separating brake, close a floodgate again, there is switch chattering, jump once there is switch, can cause switch to damage, the serious switch that also can cause explodes, so anti-bouncing function is a requisite part in operation circuit.Anti-jump effect be when closing circuit continue charged after, artificial send separating brake instruction, when making breaker open operation, open always charged closing circuit, circuit breaker can not closed a floodgate again, thereby ensures the safe operation of protection electrical system.
But in actual applications, as shown in Figure 1, the anti-jump loop of microcomputer protecting device and circuit breaker is together arranged in breaker control circuit, because the auxiliary contact QF1 of circuit breaker is connected in main road, when after breaker closing, auxiliary contact QF1 disconnects, and combined floodgate control section 101 dead electricity simultaneously of tripping position relay TWJ, anti-trip relay K0 and microcomputer protecting device inside, causes anti-bouncing function not realize; Allow to get rid of the control of QF1 for electric power in main road; after breaker closing; because the anti-trip relay K0 of breaker body and the tripping position relay TWJ of microcomputer protecting device inside go here and there in loop simultaneously; can make the anti-trip relay K0 of breaker body not reach starting current, can cause equally anti-bouncing function not realize.And; different due to manufacturer, the equipment etc. of microcomputer protecting device and circuit breaker; easily produce microcomputer protecting device and the unmatched problem of circuit breaker inner parameter, cause switch anti-jump loop defectiveness, thereby bring very large potential safety hazard to the safe operation of electrical system.
Utility model content
The main purpose of the utility model embodiment is to provide a kind of switch electric trip-preventing loop, can not realize the problem of anti-bouncing function to solve while the anti-jump loop of microcomputer protecting device and circuit breaker being together arranged in breaker control circuit in prior art.
To achieve these goals, the utility model embodiment provides a kind of switch electric trip-preventing loop, this switch electric trip-preventing loop comprises: closing circuit, co-bit monitoring circuit and trip(ping) circuit, and described closing circuit and described trip(ping) circuit are connected between the positive pole and negative pole of control bus, described closing circuit comprises: combined floodgate change over switch, circuit breaker is assisted normally-closed contact, closing coil, stored energy mechanism node, the auxiliary normally-closed contact of anti-trip relay and a jumping position latching relay potential winding, wherein: described combined floodgate change over switch successively with described first auxiliary contact of jumping position latching relay potential winding, described circuit breaker is assisted normally-closed contact, described closing coil, the auxiliary normally-closed contact of stored energy mechanism node and anti-trip relay is connected in series, and described combined floodgate change over switch connects described positive pole, the auxiliary normally-closed contact of described anti-trip relay connects described negative pole, one end of described the second auxiliary contact of jumping position latching relay potential winding is connected between described combined floodgate change over switch and described the first auxiliary contact of jumping position latching relay potential winding, the other end is connected with described one end of jumping position latching relay potential winding, and the described other end of jumping position latching relay potential winding connects described negative pole, described co-bit monitoring circuit comprises: tripping position relay, resistance and circuit breaker the first auxiliary contact, wherein: one end of described tripping position relay is connected with the positive pole of described control bus, the other end is connected successively with one end of described resistance, described circuit breaker the first auxiliary contact, and the other end of described circuit breaker the first auxiliary contact is connected between described the first auxiliary contact and the auxiliary normally-closed contact of described circuit breaker of jumping position latching relay potential winding.
In one embodiment, above-mentioned trip(ping) circuit comprises: separating brake change over switch, a jumping position latching relay current coil, circuit breaker the 3rd auxiliary contact and switching winding, wherein: described separating brake change over switch is connected in series with described jumping position latching relay current coil, circuit breaker the 3rd auxiliary contact and switching winding successively, and described separating brake change over switch connects described positive pole, and described switching winding connects described negative pole; Described one end of the first auxiliary contact and the positive pole of described control bus of jumping position latching relay current coil is connected, and the other end is connected between described the second auxiliary contact and described jumping position latching relay potential winding of jumping position latching relay potential winding.
In one embodiment, above-mentioned trip(ping) circuit also comprises: closing operation position relay, and one end of described closing operation position relay connects the positive pole of described control bus, and the other end is connected between described jumping position latching relay current coil and circuit breaker the 3rd auxiliary contact.
The beneficial effects of the utility model are; by switch electric trip-preventing of the present utility model loop; adopt less improvement design; while making microcomputer protecting device and circuit breaker together be arranged in switch electric trip-preventing loop; still can realize anti-bouncing function, thereby guarantee the safe operation of electrical system.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the principle schematic of breaker control circuit of the prior art;
Fig. 2 is the principle schematic of the control anti-jump loop of microcomputer protecting device of the prior art;
Fig. 3 is the principle schematic of the anti-jump loop of circuit breaker of the prior art;
Fig. 4 is according to the principle schematic in the switch electric trip-preventing loop of the utility model embodiment;
Fig. 5 is according to the equivalent schematic diagram in the switch electric trip-preventing loop of the utility model embodiment;
Fig. 6 is the circuit breaker internal structure schematic diagram according to the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of switch electric trip-preventing loop.Below in conjunction with accompanying drawing, the utility model is elaborated.
In existing electrical system, the schematic diagram of the control anti-jump loop of the normal microcomputer protecting device adopting as shown in Figure 2, in the time having a lasting switching signal, if allow breaker open operation, need to be after breaker closing, auxiliary contacts of circuit breaker QF3 becomes conducting state, the now current coil TBJ(I in trip(ping) circuit) action, its auxiliary contact TBJI closure, make potential winding TBJ(V) charged, its auxiliary contact TBJV-1, TBJV-2 displacement, be that TBJV-1 disconnects, cut off closing circuit, TBJV-2 closure, potential winding TBJ(V) continue charged and by TBJV-2 self-sustaining, make closing circuit remain open state, prevent the combined floodgate again of circuit breaker, disappear until continue switching signal, potential winding TBJ(V) decompression recovery.
As shown in Figure 3, when breaker closing, circuit breaker is assisted normally opened contact QF closure, the charged work of anti-trip relay K0, its contact k to the schematic diagram of the anti-jump loop of the normal circuit breaker adopting
0open, disconnect closing circuit, closed auxiliary contact QF simultaneously, connects trip-proof lockout loop, and anti-trip relay K0, continuing self-sustaining under switching signal, makes closing circuit remain open state, disappears until continue switching signal, and anti-trip relay K0 decompression is recovered.
Above two kinds of devices, in the time using separately, all can realize its anti-bouncing function, but in actual applications, normally the anti-jump loop of microcomputer protecting device and circuit breaker is together arranged in breaker control circuit, as shown in Figure 1, because the auxiliary contact QF1 of circuit breaker is connected in main road, when after breaker closing, auxiliary contact QF1 disconnects, combined floodgate control section 101 dead electricity simultaneously of tripping position relay TWJ, anti-trip relay K0 and microcomputer protecting device inside, causes anti-bouncing function not realize; Allow to get rid of the control of QF1 for electric power in main road; after breaker closing; because the anti-trip relay K0 of breaker body and the tripping position relay TWJ of microcomputer protecting device inside go here and there in loop simultaneously; can make the anti-trip relay K0 of breaker body not reach starting current, can cause equally anti-bouncing function not realize.And; different due to manufacturer, the equipment etc. of microcomputer protecting device and circuit breaker; easily produce microcomputer protecting device and the unmatched problem of circuit breaker inner parameter, cause switch anti-jump loop defectiveness, thereby bring very large potential safety hazard to the safe operation of electrical system.
Therefore, based on the problems referred to above, the utility model embodiment provides a kind of switch electric trip-preventing loop, as shown in Figure 4, this switch electric trip-preventing loop comprises: control bus, closing circuit, co-bit monitoring circuit and trip(ping) circuit, closing circuit and trip(ping) circuit are connected between the positive pole+km and negative pole-km of this control bus.
Above-mentioned closing circuit comprises: combined floodgate change over switch HT, circuit breaker auxiliary normally-closed contact QF2, closing coil HQ, stored energy mechanism node S, the auxiliary normally-closed contact k0 of anti-trip relay and a jumping position latching relay potential winding TBJ(V).
When concrete enforcement, above-mentioned closing circuit can be divided into combined floodgate branch road and trip-proof lockout branch road, above-mentioned combined floodgate change over switch HT, circuit breaker is assisted normally-closed contact QF2, closing coil HQ, stored energy mechanism node S, the auxiliary normally-closed contact k0 of anti-trip relay and jump a position latching relay potential winding TBJ(V) auxiliary contact TBJV-1 composition combined floodgate branch road, the annexation of above-mentioned each part in this combined floodgate branch road is as follows: combined floodgate change over switch HT with jump a position latching relay potential winding TBJ(V) auxiliary contact TBJV-1, circuit breaker is assisted normally-closed contact QF2, closing coil HQ, stored energy mechanism node S and anti-trip relay are assisted normally-closed contact k
0form series arm.Meanwhile, this combined floodgate change over switch is HT to be connected with positive pole+km control bus, and anti-trip relay is assisted normally-closed contact k
0be connected with the negative pole-km of control bus.
Jump a position latching relay potential winding TBJ(V) and auxiliary contact TBJV-2 form above-mentioned trip-proof lockout branch road, in this trip-proof lockout branch road, jump a position latching relay potential winding TBJ(V) auxiliary contact TBJV-2 be connected in combined floodgate change over switch HT in combined floodgate branch road and jump a latching relay potential winding TBJ(V) auxiliary contact TBJV-1 between, and, these auxiliary contact TBJV-2 and jump a position latching relay potential winding TBJ(V) be connected this jumping position latching relay potential winding TBJ(V) be connected to the negative pole-km of control bus.
Above-mentioned co-bit monitoring circuit comprises: tripping position relay TWJ, resistance R 1 and auxiliary contacts of circuit breaker QF1, wherein: tripping position relay TWJ and resistance R 1, auxiliary contacts of circuit breaker QF1 form series arm, and, tripping position relay TWJ is connected with the positive pole+km of control bus, and auxiliary contacts of circuit breaker QF1 is connected to the jumping position latching relay potential winding TBJ(V in combined floodgate branch road) auxiliary contact TBJV-1 and the auxiliary normally-closed contact QF2 of circuit breaker between.In actual applications, it is the resistance of 20K Ω that above-mentioned resistance R 1 can be selected resistance, but the utility model is not as limit.
Above-mentioned trip(ping) circuit comprises: tripping operation branch road and a jumping position monitoring circuit, in tripping operation branch road, separating brake change over switch QT with jump a position latching relay current coil TBJ(I), auxiliary contacts of circuit breaker QF3 and switching winding TQ form series arm, in practical application, this auxiliary contacts of circuit breaker QF3 is normally opened contact.And separating brake change over switch QT is connected to the positive pole+km of control bus, switching winding TQ is connected to the negative pole-km of control bus; Jump a position latching relay current coil TBJ(I) auxiliary contact TBJI be connected with the positive pole+km of control bus, and these auxiliary contact TBJI is connected to and jumps a position latching relay potential winding TBJ(V) auxiliary contact TBJV-2 with jump a latching relay potential winding TBJ(V) between.
Above-mentioned jumping position monitoring circuit comprises: closing operation position relay HWJ, this closing operation position relay HWJ is connected with the positive pole+km of control bus, and is connected to the jumping position latching relay current coil TBJ(I of tripping operation in branch road) and auxiliary contacts of circuit breaker QF3 between.
Fig. 5 is according to the equivalent schematic diagram in the switch electric trip-preventing loop of the utility model embodiment, known in conjunction with Fig. 1 and Fig. 5, the improvement that do in the switch electric trip-preventing loop of the utility model embodiment is mainly: the anti-jump loop of cancelling breaker body, and change auxiliary contacts of circuit breaker QF1(node 8-18 mark place) position, to ensure that circuit breaker can again close a floodgate in meeting anti-bouncing function.Known in conjunction with Fig. 2 and Fig. 4, the improvements in the switch electric trip-preventing loop of the utility model embodiment are mainly to make for co-bit monitoring circuit and closing circuit wherein, therefore, in Fig. 5, only show the equivalent circuit diagram of above-mentioned co-bit monitoring circuit and closing circuit, and and not shown trip(ping) circuit and jump position a monitoring circuit, because the structure of this trip(ping) circuit and jumping position monitoring circuit is identical with the structure shown in Fig. 2, Fig. 4, do not repeat them here.Combined floodgate control section 501 shown in Figure 5 is the jumping position latching relay current coil TBJ(I in corresponding diagram 4) and auxiliary contact TBJI, and jump position latching relay potential winding TBJ(V) machine auxiliary contact TBJV-1, TBJV-2.
Make above-mentioned improved reason for the switch electric trip-preventing loop of the utility model embodiment as follows: as shown in Figure 1; before the position of change auxiliary contacts of circuit breaker QF1: after breaker closing; auxiliary contacts of circuit breaker QF1 disconnects; combined floodgate control section 101 dead electricity simultaneously of tripping position relay TWJ, anti-trip relay K0 and microcomputer protecting device, causes anti-bouncing function not realize.
As only changed the position of auxiliary contacts of circuit breaker QF1; do not cut off the anti-jump loop of circuit breaker; after breaker closing; because the anti-trip relay of breaker body and the tripping position relay TWJ of microcomputer protecting device go here and there in loop simultaneously; can make the anti-trip relay of breaker body not reach starting current, cause anti-bouncing function still can not realize.
And when having changed the position of auxiliary contacts of circuit breaker QF1; and cut off after the anti-jump loop of circuit breaker; as shown in Figure 5; owing to having removed the anti-jump loop in circuit breaker; anti-jump loop in microcomputer protecting device can play anti-jump effect; can not be subject to the impact of the anti-jump loop in circuit breaker, therefore, can realize anti-bouncing function.
In the specific implementation, as shown in Figure 6, the anti-jump loop of above-mentioned cut-out circuit breaker is that the JP9 in flakes opening circuit in control loop is removed to circuit breaker internal structure, and makes its contact k
0no longer open, as normally-closed contact k
0conducting always.After above-mentioned improvement, the principle that anti-bouncing function is realized in the switch electric trip-preventing loop of the utility model embodiment is as follows:
In the time having lasting switching signal in closing circuit, closing circuit conducting, now, for preventing that closing circuit from continuing chargedly to burn closing coil or cause the microcomputer protecting device can not separating brake, need make breaker open operation, therefore, need to allow trip(ping) circuit conducting.In the time having lasting switching signal, the node S of stored energy mechanism carries out energy storage, closure after energy storage completes.Generally, this auxiliary contacts of circuit breaker QF3 is in normally open, due to the existence of switching signal, circuit breaker is in "on" position, if allow breaker open operation, need to be after breaker closing, auxiliary contacts of circuit breaker QF3 becomes conducting state, jump position latching relay current coil TBJ(I) charged, its auxiliary contact TBJI displacement closure, make to jump position latching relay potential winding TBJ(V) charged, be arranged in the auxiliary contact TBJV-1 of closing circuit, TBJV-2 displacement, auxiliary contact TBJV-2 closure, TBJV-1 disconnects, now closing coil HQ dead electricity, lasting switching signal disappears, breaker open operation, anti-bouncing function can be realized.
In sum; the improvement of circuit structure in the switch electric trip-preventing loop of the utility model embodiment; in the time that microcomputer protecting device and circuit breaker are together arranged in breaker control circuit; still can realize anti-bouncing function; effectively solved due to the dividing potential drop problem of microcomputer protecting device and circuit breaker or parameter do not mate cause can not carry out anti-jump problem, ensure the safe operation of electrical system.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method can carry out the hardware that instruction is relevant by program and complete, this program can be stored in a computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; and be not used in limit protection range of the present utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. a switch electric trip-preventing loop, is characterized in that, described switch electric trip-preventing loop comprises: closing circuit, co-bit monitoring circuit and trip(ping) circuit, and described closing circuit and described trip(ping) circuit are connected between the positive pole and negative pole of control bus;
Described closing circuit comprises: combined floodgate change over switch, the auxiliary normally-closed contact of circuit breaker, closing coil, stored energy mechanism node, the auxiliary normally-closed contact of anti-trip relay and a jumping position latching relay potential winding, wherein:
Described combined floodgate change over switch is connected in series with described the first auxiliary contact of position latching relay potential winding, the auxiliary normally-closed contact of described circuit breaker, described closing coil, stored energy mechanism node and the auxiliary normally-closed contact of anti-trip relay of jumping successively, and described combined floodgate change over switch connects described positive pole, the auxiliary normally-closed contact of described anti-trip relay connects described negative pole; One end of described the second auxiliary contact of jumping position latching relay potential winding is connected between described combined floodgate change over switch and described the first auxiliary contact of jumping position latching relay potential winding, the other end is connected with described one end of jumping position latching relay potential winding, and the described other end of jumping position latching relay potential winding connects described negative pole;
Described co-bit monitoring circuit comprises: tripping position relay, resistance and circuit breaker the first auxiliary contact, wherein:
One end of described tripping position relay is connected with the positive pole of described control bus, the other end is connected successively with one end of described resistance, described circuit breaker the first auxiliary contact, and the other end of described circuit breaker the first auxiliary contact is connected between described the first auxiliary contact and the auxiliary normally-closed contact of described circuit breaker of jumping position latching relay potential winding.
2. switch electric trip-preventing according to claim 1 loop, is characterized in that, described trip(ping) circuit comprises: separating brake change over switch, a jumping position latching relay current coil, circuit breaker the 3rd auxiliary contact and switching winding, wherein:
Described separating brake change over switch is connected in series with described jumping position latching relay current coil, circuit breaker the 3rd auxiliary contact and switching winding successively, and described separating brake change over switch connects described positive pole, and described switching winding connects described negative pole; Described one end of the first auxiliary contact and the positive pole of described control bus of jumping position latching relay current coil is connected, and the other end is connected between described the second auxiliary contact and described jumping position latching relay potential winding of jumping position latching relay potential winding.
3. switch electric trip-preventing according to claim 2 loop, is characterized in that, described trip(ping) circuit also comprises:
Closing operation position relay, one end of described closing operation position relay connects the positive pole of described control bus, and the other end is connected between described jumping position latching relay current coil and circuit breaker the 3rd auxiliary contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149878.7U CN203859486U (en) | 2014-03-28 | 2014-03-28 | Switch electrical anti-tripping circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149878.7U CN203859486U (en) | 2014-03-28 | 2014-03-28 | Switch electrical anti-tripping circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203859486U true CN203859486U (en) | 2014-10-01 |
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ID=51609324
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149878.7U Expired - Lifetime CN203859486U (en) | 2014-03-28 | 2014-03-28 | Switch electrical anti-tripping circuit |
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| CN (1) | CN203859486U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460455A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
| CN105375450A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Secondary circuit of fixed cabinet |
| CN105845517A (en) * | 2016-05-20 | 2016-08-10 | 湖南雁能森源电力设备有限公司 | High-voltage circuit breaker anti-tripping loop |
| CN107819360A (en) * | 2017-11-22 | 2018-03-20 | 深圳供电局有限公司 | Bus tie breaker control circuit, device and system |
| CN108710291A (en) * | 2018-06-19 | 2018-10-26 | 国网河南省电力公司灵宝市供电公司 | A kind of anti-jump control circuit of adaptive breaker |
| CN110535108A (en) * | 2019-10-22 | 2019-12-03 | 国网山西省电力公司阳泉供电公司 | A kind of portable operation circuit |
| CN110649622A (en) * | 2018-06-26 | 2020-01-03 | 河南平芝高压开关有限公司 | Control circuit of electrical secondary side of unified power flow controller |
| CN111756024A (en) * | 2020-06-11 | 2020-10-09 | 深圳供电局有限公司 | Circuit breaker control circuit |
| CN112259415A (en) * | 2020-09-29 | 2021-01-22 | 许继集团有限公司 | Jump position monitoring circuit for relieving circuit heating by utilizing relay switching |
| CN112881832A (en) * | 2021-01-15 | 2021-06-01 | 国网山西省电力公司晋城供电公司 | Relay protection circuit calibration system |
| CN109167264B (en) * | 2018-09-20 | 2024-03-08 | 湖北长江电气有限公司 | Jump preventing device for circuit breaker in high-voltage switch cabinet |
-
2014
- 2014-03-28 CN CN201420149878.7U patent/CN203859486U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460455A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
| CN104460455B (en) * | 2014-12-08 | 2017-05-17 | 重庆跃达电力设备有限公司 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
| CN105375450A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Secondary circuit of fixed cabinet |
| CN105375450B (en) * | 2015-11-19 | 2018-07-17 | 内蒙古电力勘测设计院有限责任公司 | A kind of fixed cabinet secondary circuit |
| CN105845517A (en) * | 2016-05-20 | 2016-08-10 | 湖南雁能森源电力设备有限公司 | High-voltage circuit breaker anti-tripping loop |
| CN107819360A (en) * | 2017-11-22 | 2018-03-20 | 深圳供电局有限公司 | Bus tie breaker control circuit, device and system |
| CN108710291A (en) * | 2018-06-19 | 2018-10-26 | 国网河南省电力公司灵宝市供电公司 | A kind of anti-jump control circuit of adaptive breaker |
| CN108710291B (en) * | 2018-06-19 | 2024-02-06 | 国网河南省电力公司灵宝市供电公司 | Self-adaptive circuit breaker anti-jump control circuit |
| CN110649622A (en) * | 2018-06-26 | 2020-01-03 | 河南平芝高压开关有限公司 | Control circuit of electrical secondary side of unified power flow controller |
| CN110649622B (en) * | 2018-06-26 | 2023-12-29 | 河南平芝高压开关有限公司 | Control circuit of unified power flow controller electrical secondary side |
| CN109167264B (en) * | 2018-09-20 | 2024-03-08 | 湖北长江电气有限公司 | Jump preventing device for circuit breaker in high-voltage switch cabinet |
| CN110535108B (en) * | 2019-10-22 | 2022-02-08 | 国网山西省电力公司阳泉供电公司 | Portable operation loop |
| CN110535108A (en) * | 2019-10-22 | 2019-12-03 | 国网山西省电力公司阳泉供电公司 | A kind of portable operation circuit |
| CN111756024A (en) * | 2020-06-11 | 2020-10-09 | 深圳供电局有限公司 | Circuit breaker control circuit |
| CN112259415A (en) * | 2020-09-29 | 2021-01-22 | 许继集团有限公司 | Jump position monitoring circuit for relieving circuit heating by utilizing relay switching |
| CN112881832A (en) * | 2021-01-15 | 2021-06-01 | 国网山西省电力公司晋城供电公司 | Relay protection circuit calibration system |
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Granted publication date: 20141001 |